Season 2: Dr. Oliver Thredson
Season 1: Chad Warwick
Folks may know him as the evil Sylar from the NBC hit Heroes or as everyone's favorite Vulcan, Spock, from the rebooted Star Trek films. But for AHS fans, Zachary Quinto will always be the spooky, spectral murder victim from "Murder House" and the rapist with an Oedipus complex from "Asylum" (for which he was nominated for an Emmy). He's left a lasting, haunting impression on viewers, to say the least.